BEIJING: China accused the United States and its allies of waging a “disinformation campaign” Thursday, after Washington, its Western partners and Microsoft said state-sponsored Chinese hackers had infiltrated critical US infrastructure networks.

“This is an extremely unprofessional report with a missing chain of evidence, this is just scissors-and-paste work,” foreign ministry spokeswoman Mao Ning said.

The allegations were “a collective disinformation campaign of the Five Eyes coalition countries”, she said.

In a report Wednesday, Microsoft highlighted Guam, a US territory in the Pacific Ocean with a vital military outpost, as one of the targets of the allegedly Chinese state-backed hackers.

But, it said, “malicious” activity had also been detected elsewhere in the United States.

The stealthy attack — carried out by a China-sponsored actor dubbed “Volt Typhoon” since mid-2021 — enabled long-term espionage and was likely aimed at hampering the United States in the event of a conflict, it said.

The claims were echoed by the United States and its allies in the Five Eyes security alliance — Australia, Canada, New Zealand and the United Kingdom — accusations Beijing denied on Thursday.